Crashing after 5.1.1 update

My phone is 100% stock after I upgraded to 5.1.1 my phone freezes on the lock screen and when I hit the power button its a delay for the screen to light up. My note 4 wasn't doing any of this till that update Iv'e factory reset twice still doing it
its not hardware that update broke my phone I've also found reports of this on other forums but no fix

please help